Home / 690,860.55-1,035,868.70-331,141.47

Finding the Fourth Proportional to 690,860.55, 1,035,868.70 and 331,141.47

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Solution

The fourth proportional to 690,860.55, 1,035,868.70 and 331,141.47 is: 496,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,860.55 : 1,035,868.70 = 331,141.47 : x
  2. Step 2: Convert to fraction form
    690,860.55/1,035,868.70 = 331,141.47/x
  3. Step 3: Cross multiply
    690,860.55x = 1,035,868.70 × 331,141.47
  4. Step 4: Simplify right side
    690,860.55x = 343,019,084,044.99
  5. Step 5: Solve for x
    x = 343,019,084,044.99/690,860.55
  6. Step 6: Final answer
    x = 496,509.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.